Method UCG,MRI,ACG,EMB,autopsy and surgical operation were performed in 31 patients who presented heart failure of unknow etiology and/or pericardial tamponade and had been considered as EMF.

• 方法对有不明原因的心力衰竭和（或）心包填塞表现并考虑为EMF的31例患者施行UCG、MRI、ACG、EMB、尸检以及外科手术。